@article{KaufmannHolwegWahletal.,
  author    = {Kaufmann, Christian and Holweg, Gerd and Wahl, Harald and Balog, Peter and Mense, Alexander},
  title     = {Privacy in Web 2.0 Learning: Experiences with the Acceptance of Working Professional Students},
  series = {Ubiquitous Learning: An International Journal},
  journal   = {Ubiquitous Learning: An International Journal},
  number    = {Vol 4, Issue 4},
  pages     = {25 -- 40},
  subject      = {Web 2.0},
  language  = {en}
}
@misc{WahlMenseNimmervolletal.,
  author    = {Wahl, Harald and Mense, Alexander and Nimmervoll, Alexander and Pucher, Robert and Gollner, Helmut and Schm{\"o}llebeck, Fritz},
  title     = {An innovative combination of non-traditional teaching methods for learning in small groups},
  subject      = {Teaching},
  language  = {en}
}